Heat-insulated container



L. A. HEINLE.

HEAT INSULATED CONTAINER.

APPLICATION FILED APR.24, l9l9.

1,830,704. Patented Feb. 10,1920.

LAWRENCE HEINLE, OF TQLEIDO, OHIO.

HEAT-INSULATED CONTAINER.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed April 24, 1919. Serial No. 292,250.

To all whom it may concern:

Be it known that I, LAWRENCE A. HEINLE, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new anduseful Improvements in Heat-Insulated Containers; and I-do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates to and is intended to provide a container for the temporary storage and the transportationof such articles of food as become injured or spoiled by exposure to warm atmosphere, including such articles as ice-cream, butter, oysters and many other foods; My container is adapted also for the reception and transportation of v articles designed to remain heated for a limited eriod.

of the thermos or vacuum type are well understood, the high non-conductivity of a partial vacuum in the annular space between I the difficulties indicated, I avail myself of the advantages of the vacuum principle alluded to, and provide co-axial vessels of non-fragile character, so protected by a substantial non-heat conductingeasing that they will not beinjured by ordinary use. The mouth of my container flares outwardly affording ready access to its interior. The necessarily large closure for the flaring mouth is hollow and exhausted of air.

\Vith these and other ends in view, my container consists of the devices, construc tion and arrangement of parts'hereinafter described, and illustrated in the accompanying drawings. in which- Figure .1 is a top-plan view of my container removed from its case; Fig. 2, a central vertical sectional elevation of the same in position in its case; Fig. 3, a perspective view, on an enlarged'scale, of certain details 1V ile the advantages of liquid containersculinary vessels. The glaze does not, however, extend quite to the upper'edges of the two vessels, there being left, unglazed, two upwardly projecting flange-portions l and 2". These two flange-portions, after the two vessels are separately glazed, are welded together, as plainly indicated in Figs. 3 and 4. The two vessels now constitute practically one piece, there being between the innor and outer walls a hermeticall sealed annular space 8. From this space t e air is exhausted, for instance at the point indicated at 4, in the usual or any preferred manner.

Near its upper end the vessel 1 flares slightly outwardly, as at 5, and then turns horizontally outwardly, as at 6, and then turns upwardly to form the welded flangeportion 1*. It will now be seen that the impervious inner and outer vessels 1 and 2 are rigidly and permanently secured together and against relative movement.

-7 is the lid of mycontainer. It is composed of two pieces of sheet metal like that of the parts 1 and 2. The top piece 8 is pressed, stamped, or otherwise formed as an inverted pan, having an extended horizontal flange 9. The lower part of the lid 10 is also shaped as a pan, having an extended horizontal flange 11. 'The upper and lower pieces are separately glazed or enameled o'n both sides, except the flanges 911. These two flanges are welded together. Now the lid constitutes a stout impervious hermetically sealed hollow body from which the air may be exhausted, as at 12, in the usual or any preferred manner. The side of the lower member .of the lid is inclined to conform to the slant 5 of the vessel 1, but these two surfaces are prevented from contact by an interposed gasket 13, of any suitable cork-like material, which gasket also prevents the flange of the lid from contacting with the shoulder formed by the part 6.

The flange of the lid 8, which fits around the inside of the upstanding flange l, is hinged at one side, as at H, to the flangeportion l -2. At its opposite side the lid is pressed tightly down into position and is there detachably held by a clamp 15.

16 is a case designed to receive the above described container with a fit just close enough to permit its convenient reception and withdrawal. This case consists of inner and outer concentric wallspreferably sheet metalspaced apart to form an annular space in which is packed, as at 17, some nonheat-conducting material such, for instance, as asbestos. A lid or cover 18 is hinged, as at 19, to one side of the top of the case, the opposite side of the lid being provided with a suitable fastening device, in this case, for illustration, a spring catch 20.

Having described my invention, what I claim and desire to secure by Letters Patent is 1. In a container of the described character, two co-axial sheet metal vessels having tlierebetween an exhausted annular space, said vessels being vitreously enameled on their adjacent faces, said vessels having at one end unenameled marginal flanges which are welded together.

52. A container of the described character, comprising two co-axial sheet metal vessels having therebetween an exhausted annular space, said vessels being exteriorly and interiorly vitreously enameled, said vessels,

at one end, having extended unenameled flanges which are hermetically sealed together.

3. In a container of the described character, two co-axial sheet metal vessels having therebetween an exhausted annular space,

said vessels being exteriorly and interiorly vitreously enameled, said vesselshaving at one end unglazed flange-portions which are welded together, the inner vessel having an outwardly flaring mouth, a closure for said mouth comprising a hollow exhausted member which conforms to said flaring mouth, and a gasket forming a seat for said closure.

4. In a container of the described character, two vitreously enameled co-axial sheet metal vessels having therebetween an exhausted annular space, said vessels, at one end, having extended unenameled flanges which are hermetically.sealed together, a closure for said vessel consisting of a hollow member, hinged connections between said closure and said extended flanges, and devices for securing said closure in closed relation.

5. A container of the described charac ter, comprising two co-axial sheet metal vessels having therebetween an exhausted annular space, said vessels being vitreously enameled, said vessels having, at one end, unenameled flanges which are hermetically sealed together, the inner vessel having an outwardly flaring mouth, a closure for said mouth comprising a hollow, exhausted member which conforms to said flaring mouth, and devices for securing said closure in closed relation, in combination with a suitable receptacle for said container, which re ceptacle conforms to and rotects the enamel of the outer wall and tie closure of said container.

In testimony whereof I aflix my signature in presence of two witnesses.

LAl/VRENCE A. HEINLE.

Witnesses Leo M. Fox, GRACE SMITH. 

